Doctoral Positions in Germany
PhD-Position: Influence of Defects on the Electrical Properties of TMDs • Fritz-Haber-Institut der Max-Planck-Gesellschaft • Berlin
|Time Span||as soon as possible for 3 years|
|Application Deadline||30 Jun 2019|
|Type of Position||
|Field of Research||
|Description||Two-dimensional materials and in particular transition metal dichalcogenides (TMDs) are a fascinating and heavily investigated platform. Although they have many promising properties, it is difficult to create them defect-free. Especially, in optoelectronic applications, non-radiative defect-assisted recombination is the dominant process. This project addresses how defects influence the charge transport and the photoluminescence of TMDs. Scanning probe microscopy (SPM) is a powerful tool to characterize the composition of these nanomaterials. Our newly developed silicon samples allow us to combine transport/gating experiments with the high spatial resolution of SPM. This setup has the advantage that the SPM tip can characterize the chemical structure of the defected TMDs. An installed lens allows us to correlate the photoluminescence signal to the structural information of the TMDs. The number of defects as well as their chemical nature will be used to explain the optoelectrical properties of the nanomaterial.
Additionally, you will investigate the role of organic dopants. By tuning the surface with organics species, the photo luminescence can be drastically improved although the detailed process, defect-healing or passivation is not fully understood yet. Again, the high resolution of SPM can help, to gain insight into the physical processes occurring.
• Exciting research in a dynamic Max Planck group located in the Berlin science area
• Excellent supervision and education, including the International Max Planck Research School
How to apply? Please mail us
• Your scientific CV and university certificates with marks
• A motivation letter (max. 1 page) why you want to join the group. Only applications with this motivation will receive our full attention.
• An excellent master’s degree in physics or related subject
• Background in solid-state physics, low temperature scanning probe microscopy and/or device fabrication
|Language of Dissertation||
Rechtlicher Hinweis: Die Informationen auf dieser Webseite werden dem DAAD von Dritten zur Verfügung gestellt. Trotz sorgfältiger Prüfung kann der DAAD für die Richtigkeit und Vollständigkeit keine Gewähr leisten.